Upper Jurassic sedimentary rocks of the Bowser Lake Group are intruded by the Tertiary Ponder Pluton. The sediments are dominated by pyritic, carbonaceous argillite, which is hornfelsed near the intrusive contact, and minor beds of greywacke and quartzite. The intrusives are comprised of a medium-grained biotite-hornblende granodiorite which is cut by aplite, andesite and lamprophyre dykes. A major north trending fault is cut by post-mineralization crossfaults.

The main showing is a 0.3 to 1.0 metre wide quartz-sulphide vein at the contact between the sediments and granodiorite. The vein is independent of the complex contact relationships. Mineralization consists of coarse pods and disseminations of pyrite, pyrrhotite, sphalerite, chalcopyrite, galena, bornite, arsenopyrite and tetra- hedrite. It has been traced for 20 metres and grades up to 18.5 grams per tonne gold over a thickness of 0.35 metres (Assessment Report 14572). The north trending vein dips 30 to 45 degrees to the west.

A possible continuation of the vein occurs 60 metres to the north, striking north-south for 30 metres and grading up to 22 grams per tonne gold over a 0.30 metre thickness. A small vein, 180 metres north of the main showing, assayed 1.37 grams per tonne gold over 1.0 metres. A sample of quartz-sulphide vein float assayed 70 grams per tonne gold, 82 grams per tonne silver, 1.12 per cent copper and 1.51 per cent zinc (Assessment Report 14572).